Step two: Add background audio to your production
In this step, you add audio files to your production. This audio is known as background audio, and will overlap with any native audio built into the video itself. You can apply background audio to the entire production, or to individual items within the production.
1 In the Media Selector, browse your computer for audio files.
2 When you find the audio file you want to add, add it to the production in one of the following ways:
n To add it to an individual photo or video clip, drag it to the item in the production. An Audio icon appears in the Item-level Icon container.
n To add it to the entire production, drag it to the Production Editor background (the area between the panels). An Audio icon appears in the Production-level Icon container.